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Taking a look at the page's sourcecode will tell you most of the answer!
–
SirkoMay 21 '12 at 12:32

Looking at the source code of a project with this scope is probably not going to help someone overwhelmed with "what do I do?"
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JordanMay 21 '12 at 12:34

"Anyone can suggest me something?" Yeah, keep studying ;). It's not just a matter of wanting to do something. In order to be able, you must first learn.
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goldilocksMay 21 '12 at 12:37

1

@Jordan I totally agree with you. I'm not some idiot that comes out to look at things without asking first. I looked at the source code, but I could not intender what makes these animations happen only when "reach" in the visible to the user.
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PrestonMay 21 '12 at 12:38